Not Bad :P
Because of the speed I think that it loses some of the waltz feel to it and at the some of the really fast parts it sounds a little jumbled. Other then that though it's not too bad! :)
The song is pretty ok. Not Chopin at all. Maybe you should re-name it.
Glad you at least don't detest the tune.
If you listen to his waltz in E flat Op.18, you might notice some of the similarities.